Add fix for plugin naming collisions

Author: westey-m

dotnet/src/SemanticKernel.Core/Memory/AIContextExtensions.cs

@@ -18,11 +18,20 @@ public static class AIContextExtensions
     /// </summary>
     /// <param name="plugins">The plugins collection to register the <see cref="AIFunction"/> objects on.</param>
     /// <param name="aiContext">The <see cref="AIContext"/> to get plugins from.</param>
-    /// <param name="pluginName">The name to give to the plugin.</param>
+    /// <param name="pluginName">The name to give to the plugin. This will be appended with _x where x is an ascending number, until a unique plugin name is found.</param>
     public static void AddFromAIContext(this ICollection<KernelPlugin> plugins, AIContext aiContext, string pluginName)
     {
         if (aiContext.AIFunctions is { Count: > 0 })
         {
+            var originalPluginName = pluginName;
+            var counter = 1;
+
+            // Find a unique plugin name by appending a counter if necessary.
+            while (plugins.Any(x => x.Name == pluginName))
+            {
+                pluginName = $"{originalPluginName}_{counter}";
+            }
+
             plugins.AddFromFunctions(pluginName, aiContext.AIFunctions.Select(x => x.AsKernelFunction()));
         }
     }

dotnet/src/SemanticKernel.UnitTests/Memory/AIContextProviderTests.cs

@@ -1,5 +1,6 @@
 // Copyright (c) Microsoft. All rights reserved.
 
+using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Extensions.AI;
@@ -64,4 +65,26 @@ public async Task ResumingAsyncBaseImplementationSucceeds()
         // Act & Assert.
         await mockPart.Object.ResumingAsync("threadId", CancellationToken.None);
     }
+
+    [Fact]
+    public void ExtensionCanAddPluginsFromAIContextProvider()
+    {
+        var plugins = new List<KernelPlugin>();
+
+        var aiContext = new AIContext
+        {
+            AIFunctions = new List<AIFunction>
+            {
+                AIFunctionFactory.Create(() => Task.FromResult("Function1 Result"), "Function1"),
+                AIFunctionFactory.Create(() => Task.FromResult("Function2 Result"), "Function2")
+            }
+        };
+
+        plugins.AddFromAIContext(aiContext, "TestPlugin");
+        plugins.AddFromAIContext(aiContext, "TestPlugin");
+
+        Assert.Equal(2, plugins.Count);
+        Assert.Contains(plugins, p => p.Name == "TestPlugin");
+        Assert.Contains(plugins, p => p.Name == "TestPlugin_1");
+    }
 }